燕国

link‍] (Chinese) "走进燕国 >> 燕都遗迹 >> 易都—容城南阳遗址、雄县古贤村遗址" Archived 2013-12-31 at the Wayback Machine Accessed 2012-12-13 (Chinese) "走进燕国 >> 燕都遗迹 >> 中都——窦店古城"

commanderies under Youzhou. Guangyang Commandery became the State of Yan (燕国), which had four counties: Ji County, Changping, Jundu and Guangyang County

Xiadu History of Beijing Wang Jijie (September 1, 2005). 燕国明刀分期研究及相关问题探讨 [Research on Yan Knife-Money and Related Topics]. Beijing Municipal

Yan State knife money (燕国刀币)

China Radio International (in Chinese). August 5, 2010. 《正-青春》曝光海报 赵燕国彰王子文残酷生存. Sohu (in Chinese). September 20, 2011. 王子文《辛亥革命》为求角色真实学法语. Sina (in